Home / 39,034.28-53,867.30-21,129.44

Finding the Fourth Proportional to 39,034.28, 53,867.30 and 21,129.44

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Solution

The fourth proportional to 39,034.28, 53,867.30 and 21,129.44 is: 29,158.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,034.28 : 53,867.30 = 21,129.44 : x
  2. Step 2: Convert to fraction form
    39,034.28/53,867.30 = 21,129.44/x
  3. Step 3: Cross multiply
    39,034.28x = 53,867.30 × 21,129.44
  4. Step 4: Simplify right side
    39,034.28x = 1,138,185,508.33
  5. Step 5: Solve for x
    x = 1,138,185,508.33/39,034.28
  6. Step 6: Final answer
    x = 29,158.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.